https://yse.yabesh.ir/std/handle/yse/123 2026-05-06T20:58:40Z https://yse.yabesh.ir/std/handle/yse/232341 ITU-R BT.1207-1 SPANISH; English -- Data Access Methods for Digital Terrestrial Television Broadcasting; Spanish -- Métodos de acceso a las señales de radiodifusión de televisión terrenal digital ITU-R - International Telecommunication Union/ITU Radiocommunication Sector 1997-01-01T00:00:00Z https://yse.yabesh.ir/std/handle/yse/232323 ITU-R S.1528 SPANISH; English -- Satellite antenna radiation patterns for non-geostationary orbit satellite antennas operating in the fixed-satellite service below 30 GHz; Spanish -- Diagramas de radiación de antena de satélite para antenas de satélite no geoestacionario con funcionamiento en el servicio fijo por satélite por debajo de 30 GHz ITU-R - International Telecommunication Union/ITU Radiocommunication Sector 2001-01-01T00:00:00Z https://yse.yabesh.ir/std/handle/yse/232312 ITU-R BT.472-3; Video-Frequency Characteristics of a Television System to Be Used for the International Exchange of Programmes between Countries That Have Adopted 625-Line Colour or Monochrome Systems - Section 11C - Control, Measurement and International Exchange of Television Programmes ITU-R - International Telecommunication Union/ITU Radiocommunication Sector 1990-01-01T00:00:00Z https://yse.yabesh.ir/std/handle/yse/232305 ITU-R BS.641; Determination of Radio-Frequency Protection Ratios for Frequency-Modulated Sound Broadcasting - Section 10B - Frequency-Modulation Sound Broadcasting in Bands 8 (VHF) and 9 (UHF) ITU-R - International Telecommunication Union/ITU Radiocommunication Sector 1986-01-01T00:00:00Z